1212295650 has 24 divisors (see below), whose sum is σ = 3006493584. Its totient is φ = 323278800.

The previous prime is 1212295583. The next prime is 1212295657. The reversal of 1212295650 is 565922121.

It is not an unprimeable number, because it can be changed into a prime (1212295657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4040836 + ... + 4041135.

It is an arithmetic number, because the mean of its divisors is an integer number (125270566).

Almost surely, 2^1212295650 is an apocalyptic number.

1212295650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212295650 is an abundant number, since it is smaller than the sum of its proper divisors (1794197934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212295650 is a wasteful number, since it uses less digits than its factorization.

1212295650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8081986 (or 8081981 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1212295650 is about 34818.0362743220. The cubic root of 1212295650 is about 1066.2757090447.

The spelling of 1212295650 in words is "one billion, two hundred twelve million, two hundred ninety-five thousand, six hundred fifty".